1. Achievements give the most exp but are limited. 2000-3000 for regular, 10K for master. Whew!2. Quests take you a little ways with 500 each, but worlds are broken and they are slow.3. One can grind at a farm, but once again, mobs. Farms can also be very intense and aren't suited to newbies.4. Dungeon exploring can give EXP fast but also isn't suited for newbies.5. Lastly, general exploring gives exp. Hey, slow but steady, eh?

There was an offer on some piano app for like 200 crowns. It says it costs money but if you cancel the auto renew after you get the crowns it's free. Also you can find more good crown offers between using tapjoy from crown store, the tapjoy app. And using safari to goto tapjoy website